124″ Twin Cam Monster Big Bore Kit – Black Highlight

From: Revolution Performance
SKU: 201-126W


– Fits 1999-2017  Twin Cam motorcycles
– Aerospace-grade all-aluminum cylinder with Nickel-Silicon-Carbide (NSC) electroplated bore
– No sleeving allows for larger bore sizes
– NSC-plated cylinders have less friction for increased horsepower, lower engine temperatures and a longer lifespan
– Monster big bore kits will require case boring. Additional upgraded services recommended.
– Includes pair of all-aluminum NSC-coated bore cylinders, custom-forged pistons with high-tension rings specifically designed for SNC cylinders and a head/base gasket set
– Replacement gasket sets available separately
– Upgraded cylinder studs and head bolts recommended
– Made in the U.S.A.

3 in stock

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SKU: 201-126W Categories: , ,


Color/Finish: Black with Highlighted Fins
Bore Size: 4.250″
Displacement: 124″
Stroke Length: 4 3/8″
Compression Ratio: 11.2:1 with stock heads (86 cc) and 10.3:1 with Revolution Performance CNC head work (95 cc)